2008 piece comparing and contrasting two company-wide memos, one from Steve Jobs, one from Steve Ballmer:

Apple employees may not always — or even often — agree with
Jobs, but they do believe him. Apple tends to do and achieve
exactly what Jobs says they will. (His declaration in January 2007
that Apple would be selling 10 million iPhone per year by 2008,
for example.)

Ballmer’s promises, in contrast, defy belief, at least regarding
where Microsoft stands against Apple in terms of “end-to-end
experience” and against Google in terms of search and online
advertising. He’s either ignorant or lying — neither of which
is inspiring to the rank-and-file engineers.